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/*
* this file was largely taken from the oxygen gtk engine
* Copyright (c) 2010 Hugo Pereira Da Costa <[email protected]>
* Copyright (c) 2010 Ruslan Kabatsayev <[email protected]>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or( at your option ) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include "tdegtk-hooks.h"
#include "../config.h"
#include <cassert>
#include <iostream>
#if TDEGTK_DEBUG
static int counter( 0 );
#endif
//__________________________________________________________________
bool Hook::connect( const std::string& signal, GType typeId, GSignalEmissionHook hookFunction, gpointer data )
{
// make sure that signal is not already connected
assert( _signalId == 0 && _hookId == 0 );
// check type id
if( !g_type_class_peek( typeId ) )
{
#if TDEGTK_DEBUG
std::cerr << "Oxygen::Hook::connect - typeId " << g_type_name(typeId) << " not yet installed" << std::endl;
#endif
g_type_class_ref( typeId );
}
// store signal id
_signalId = g_signal_lookup( signal.c_str(), typeId );
if( !_signalId )
{
#if TDEGTK_DEBUG
std::cerr << "Oxygen::Hook::connect - signal " << signal << " not installed." << std::endl;
#endif
return false;
}
// store attributes and create connection
_hookId = g_signal_add_emission_hook(
_signalId,
(GQuark)0L,
hookFunction,
data, 0L);
#if TDEGTK_DEBUG
++counter;
std::cerr << "Oxygen::Hook::connect - hook: " << _hookId << " counter: " << counter << std::endl;
#endif
return true;
}
//____________________________________________________________________
void Hook::disconnect( void )
{
// disconnect signal
if( _signalId > 0 && _hookId > 0 )
{
#if TDEGTK_DEBUG
--counter;
std::cerr << "Oxygen::Hook::disconnect - hook: " << _hookId << " counter: " << counter << std::endl;
#endif
g_signal_remove_emission_hook( _signalId, _hookId );
}
_signalId = 0;
_hookId = 0;
}
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